A method for constructing a frame installation coordinate system
A technology of installation coordinate system and construction method, applied in the field of gantry installation coordinate system construction, can solve problems such as large error and rough measurement, and achieve the effects of easy implementation, shortening installation period, and improving on-site installation accuracy
Active Publication Date: 2019-11-29
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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[0003] Domestically, the scribing method is used. This method mainly uses basic measuring tools such as a steel ruler, and draws a line on the stand to give the initial installation position of the part. problem
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[0033] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the invention. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below ...
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The invention discloses a platform installation coordinate system constructing method, belonging to the technical field of geometric quantity measurement. The method comprises the following steps: step 1: arranging a plurality of datum marks on a substrate, wherein the arranged datum marks are used to set up a measurement coordinate system and the substrate is provided with a testing piece installation point P1 for measuring the measurement point of the coordinate system quality; step 2: selecting the installation position of the substrate on the platform; step 3: connecting any two points among the datum marks to form a line used as the coordinate axis of the measurement coordinate system, wherein the normal direction of the plane constructed by the plurality of datum marks is used as another coordinate axis; and automatically generating the third coordinate axis; step 4: fitting and re-testing the established measurement coordinate system with the theoretical coordinate system; Step 5: converting the measurement coordinate system into a global coordinate system; and step 6: measuring a plurality of testing pieces in requirement of transfer station installation of laser tracking instrument. According to the invention, the method utilizes the least-square fitting of a local coordinate system with a theoretical coordinate system to realize the component installation, which improves the measuring work efficiency and ensures the installation accuracy of gantry components.
Description
technical field [0001] The invention belongs to the technical field of geometric quantity measurement, and in particular relates to a method for constructing a frame installation coordinate system. Background technique [0002] In industrial fields such as aerospace, the installation of components (test pieces) in large-scale test benches has no reference points (surfaces) such as datums and base surfaces, making the installation of components difficult, and the spatial position relationship between components, such as two Face angle, concentricity and other factors. A measurement coordinate system needs to be established to match the measurement coordinate system with the model coordinate system. [0003] Domestically, the scribing method is used. This method mainly uses basic measuring tools such as steel rulers, and draws lines on the stand to give the initial installation position of the parts. This method is a rough measurement, and the installation error is large, and...
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IPC IPC(8): G01B11/03
CPCG01B11/03
Inventor 薛战军解岩王海英曾渭平张晓勇
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA